Let's divide 783457 by 66
The aim is to understand the frequency of 66 in 783457.

Moving on to step 1:
66 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 66

On to step 2:
When dividing 78 by 66, we get 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 66 from 78, we get 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 66

Step 3:
123 divided by 66 is 1 with a remainder of 57.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 66 from 123 to get 57.
Include the next digit (4) from the dividend after 57, then repeat: 574 / 66

Advancing to step 4:
66 can be fit into 574 8 times, resulting in a remainder of 46.
The next digit of our result is 8. 
Result so far: 118.0
Subtract 528 from 574 to get 46.
Fetch the next digit (5) from the dividend, attach it to 46 and continue: 465 / 66

Let's proceed to step 5:
When dividing 465 by 66, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 1187.0
Subtract 462 from 465 to get 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 66

Step 6:
When dividing 37 by 66, we get 0 with a remainder of 37.
Put 0 as the next digit of the answer. 
Result so far: 11870.0
If we subtract 0 from 37, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 7:
When dividing 370 by 66, we get 5 with a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 11870.5
If we subtract 330 from 370, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
The number 66 fits into 400 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 11870.56
If we subtract 396 from 400, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
If we divide 40 by 66, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 11870.56
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
When dividing 400 by 66, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 11870.5606
The remainder is 4 after subtracting 396 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 11:
66 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 11870.5606
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 12:
If we divide 400 by 66, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 11870.560606
Deduct 396 from 400 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
66 can be fit into 40 0 times, resulting in a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 11870.560606
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 14:
66 goes into 400 6 times with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 11870.56060606
If we subtract 396 from 400, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 11870.56060606, with a leftover of 4e-09.